package com.leyou.item.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.leyou.item.dto.SpecGroupDTO;
import com.leyou.item.dto.SpecParamDTO;
import com.leyou.item.entity.SpecGroup;
import com.leyou.item.mapper.SpecGroupMapper;
import com.leyou.item.service.SpecGroupService;
import com.leyou.item.service.SpecParamService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Service
public class SpecGroupServiceImpl extends ServiceImpl<SpecGroupMapper, SpecGroup> implements SpecGroupService {
    @Autowired
    private SpecParamService paramService;

    @Override
    public List<SpecGroupDTO> querySpecGroupByCategory(Long cid) {

        return SpecGroupDTO.convertEntityList(query().eq("category_id", cid).list());
    }

    @Override
    public List<SpecGroupDTO> listSpecGroup(Long cid) {

        List<SpecGroupDTO> specGroupDTOS = SpecGroupDTO.convertEntityList(
                this.query()
                        .eq("category_id", cid)
                        .list());

        //key groupId,value,
        Map<Long, List<SpecParamDTO>> specParaMap = SpecParamDTO.convertEntityList(
                this.paramService.query()
                        .eq("category_id", cid)
                        .list())
                .stream()
                .collect(Collectors.groupingBy(SpecParamDTO::getGroupId));

        //循环给每个组赋值组内规格参数集合
        specGroupDTOS.forEach(specGroupDTO -> {
            specGroupDTO.setParams(specParaMap.get(specGroupDTO.getId()));
        });
        return null;
    }
}